diff --git a/.semaphore/semaphore.yml b/.semaphore/semaphore.yml
index 68c5870..5b9fe03 100644
--- a/.semaphore/semaphore.yml
+++ b/.semaphore/semaphore.yml
@@ -13,7 +13,6 @@ blocks:
           matrix:
             - env_var: RUBY_VERSION
               values:
-                - 2.5.9
                 - 2.6.10
                 - 2.7.7
                 - 3.0.5